CN109555983A - Transparent OLED illumination assembling - Google Patents

Transparent OLED illumination assembling Download PDF

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Publication number
CN109555983A
CN109555983A CN201811606325.9A CN201811606325A CN109555983A CN 109555983 A CN109555983 A CN 109555983A CN 201811606325 A CN201811606325 A CN 201811606325A CN 109555983 A CN109555983 A CN 109555983A
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CN
China
Prior art keywords
light
oled
light source
transparent
reflection sources
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CN201811606325.9A
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Chinese (zh)
Inventor
庞惠卿
高亮
谢梦兰
王静
孔凡路
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Beijing Xia He Science And Technology Co Ltd
Beijing Summer Sprout Technology Co Ltd
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Beijing Xia He Science And Technology Co Ltd
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Priority to CN201811606325.9A priority Critical patent/CN109555983A/en
Publication of CN109555983A publication Critical patent/CN109555983A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/68—Details of reflectors forming part of the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • F21V7/26—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material the material comprising photoluminescent substances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F21Y2115/15—Organic light-emitting diodes [OLED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

Disclose a kind of transparent OLED illumination assembling comprising transparent OLED light source；Reflection sources a comprising reflecting surface；Wherein the transparent OLED light source includes two light-emitting surfaces, and described two light-emitting surfaces are located at the opposite sides of the transparent OLED light source；The light-emitting surface of the transparent OLED light source is at least with the reflective surface portion of the reflection sources be overlapped；There is physical connection between the reflection sources and the transparent OLED light source, and the nearest spacing of the reflecting surface of the reflection sources and the transparent OLED light source is greater than 1mm.It is all optimised in light extraction, power efficiency and light emitting region that the transparent OLED illumination assembling enables to transparent OLED, while not losing overall clarity again.

Description

Transparent OLED illumination assembling
Technical field
The present invention relates to a kind of illumination assemblings.More specifically it relates to a kind of transparent OLED illumination assembling.
Background technique
Transparent OLED is for a long time by the favor of display industry
(https://www.cnet.com/news/samsung-shows-retail-ready-transparent- mirrored-oled/).Recently, they also start the concern by illumination application, and various displayings and commercial product can be It is found in the market (Fig. 1-5).For example, Fraunhofer is selling transparent OLED suit Tabola (Fig. 1)
(https://www.oled-info.com/tabola-transparent-and-structured-oleds- now-shipping-we-go-hands).These panels are independently to drive and be used alone.American Airlines Aura in addition to There is ceiling to show, also transparent OLED is shown and is integrated on aircraft windows (Fig. 2)
(https://www.oled-info.com/aura-announce-its-premium-aircraft-oled- displays).Vehicle manufacturers, such as Volkswagen illustrate and transparent OLED panel are embedded on rear view window to do tail The concept car (Fig. 3) of lamp
(https://www.oled-info.com/volkswagen-unveils-new-autonomous-ev- concept-transparent-oled-break-lights).All the above products or displaying only used transparent OLED Panel itself.However, transparent OLED panel is it is known that having than single side luminescent device (such as bottom shines or top-illuminating OLED) Low luminous efficiency, this is because same luminous flux is divided into two opposite directions so that each direction only contains total light Well-illuminated a part.In addition, with the increase of light emitting region, since such as magnesium silver of the material as common transparent cathode is with low Conductivity, voltage also rise with it.Which results in transparent OLED panels to have lower power efficiency than single side luminescent device.Institute The transparent smooth foldable assembly (TLO) aimed to show that in artistic effect, such as Fig. 4 is shown with, many transparent OLED, and non-universal photograph It is bright.Or the aircraft windows being mainly used in using their transparent characteristic in simple displaying, such as Fig. 2.In the present invention, I Disclose a kind of assembling of novel illumination, used the combination of transparent OLED luminescent panel and reflection sources to obtain high efficiency and thoroughly Lightness, the invention can be used simultaneously in general illumination and special occasions.
For a long time all studies have reported that how to regulate and control illumination.US 8,922,113 and US 8,764,239 is described pair Flexible OLED panel moulding assists internal reflection to control light beam.But it is both above-mentioned to be appropriate only for flexible OLED panel, and it Be again it is known that be limited to low yield short life.The concept that reflection sources improve light extraction with this is integrated in oled panel Also it was explored.The one reflective inclined-plane of construction in substrate US 5,834,893, and US 8,513,885 between anode and cathode It is embedded in a series of reflective plates.These application requirements additionally with complicated processing step, were both increased manufacturing cost or were reduced Yield.Although the easy steps that reflectorized material is added in package system can be taken, as described in CN 108550710, by The effect of light beam moulding is closely extremely difficult to very much in reflection sources and light source distance.In our invention, external reflection source with Transparent OLED panel is assembled together, and to regulate and control light emitting region while improving light extraction with this.
Fig. 5 show an illumination and shows, a patterned transparent OLED panel, which has been placed on one piece, to be had equally Before the bottom illuminating OLED panel of figure.This two pieces of panels alternately shine in the presentation, it is meant that, it is latter when lighting for previous piece Block is to extinguish.The purpose of this assembling essentially consists in the transparency for showing the one piece of luminescent panel in front.Wherein star graphic is It is completed by depositing metal wire between anode and cathode, reduces electrode resistance first to reach, secondly increase the mesh of artistic effect 's.Although the bottom illuminating OLED panel of behind can be seen as a reflection sources when extinguishing in this figure, it is with ours Invention has essential distinction.Firstly, although this is generally aligned point-blank and distance panel shown on figure General 20 centimetres, the position of this two pieces of oled panels is arbitrarily, as long as that transparent block at least part is in bottom light-emitting surface actually The front of plate.Although two pieces of panels are all placed on the table, there is no the positions that physical connection makes them each other Set relatively fixed, theoretically, any one piece between them can arbitrarily move to infinity without by any containing.And In our invention, before the relative position of oled panel and subsequent reflection sources be to be designed to maximum journey by carefully calculating The collection light of degree reaches specific beam distribution.Especially, there are physical connections between light source and reflection sources, so that they Positional relationship be relatively fixed, or mutually restrained.It also is exactly that this physical connection ensure that calculated positional relationship It is accurately realized, to reach the beam distribution effect of design.Secondly, the reflection sources in the present invention are also intended to by suitably setting Its shape, size and surface characteristics are counted to regulate and control illumination zone, if reflection sources can be any kind of material or component it It can reflected light.But in above-mentioned displaying, the panel of behind be monolithic OLED and with front have identical size and base Plate material.Moreover, although foring physical link between transparent panel and Reflector Panel in assembling disclosed in us, it Be not necessarily required to use simultaneously in some cases.But above-mentioned displaying must have reached artistic effect using two pieces of panels simultaneously Fruit.Finally, 6 front-seat inch clear oled panels have been integrated nontransparent metal bus, in the displaying to overcome conduction Efficiency challenge caused by rate is low.And in our invention, the panel of front prefers to be small enough to medium size, to avoid using Bus simultaneously improves production yield.Especially, we can be used a series of small panels and can also have spacing between panel and panel So that radiation luminous energy has no the transmission of loss.
Finally, although adding a reflection sources to be not completely new idea (such as car light) at point light source rear, to point light source and face The light beam regulation of light source is entirely different.Especially, the OLED light source that we use be transparent devices mean reflected light with Before penetrate light and will converge.So specially devising new modeling and simulation in this work for transparent OLED.Motor vehicle manufacturer Audi Also have and red OLED luminescent panel is fabricated to automobile tail light (OLED lighting in automobile Applications, OLEDs World Summit, 2017), but use traditional bottom luminescent device and highlight OLED included reflecting surface-large-area metal cathode.And our invention is intended to composition transparent OLED light source and additional reflection Source carries out light beam regulation, and application scenarios include but is not limited to car light.
In the present invention, we can disclose one or more transparent OLED luminescent panels and illuminate the specific of assembling with reflection sources Description, so that light extraction, power efficiency and light emitting region are all optimised, while not losing overall clarity again.
Summary of the invention
The present invention is intended to provide a kind of transparent OLED illumination assembling is at least partly above-mentioned to solve the problems, such as.Of the invention is transparent OLED illumination assembling, enables to light extraction, power efficiency and the light emitting region of transparent OLED all optimised, while not damaging again Lose overall clarity.
According to one embodiment of present invention, a kind of OLED illumination assembling is disclosed, comprising:
Transparent OLED light source；
Reflection sources a comprising reflecting surface；
Wherein the transparent OLED light source includes two light-emitting surfaces, and described two light-emitting surfaces are located at the transparent OLED light source Opposite sides；
The light-emitting surface of the transparent OLED light source is at least with the reflective surface portion of the reflection sources be overlapped；
There are physical connection, and the reflecting surface of reflection sources and transparent OLED between the reflection sources and the transparent OLED light source Nearest spacing is greater than 1mm between light source.
Transparent OLED illumination assembling disclosed by the invention, realizes and combines transparent OLED luminescent panel in artistic effect and lead to The application of both illumination.Especially, by position opposite between reflection sources and reflection sources and transparent OLED luminescent panel The control to beam distribution may be implemented in the design set, and reaches specific observing effect.
Detailed description of the invention
Fig. 1 is the relevant technologies -- Fraunhofer Tabola transparent OLED panel.
Fig. 2 is the relevant technologies -- it is integrated in the transparent OLED display on aircraft windows.
Fig. 3 is the relevant technologies -- it is integrated in the transparent OLED panel for being used as taillight on automobile.
Fig. 4 is the relevant technologies -- transparent luminescent spells folding product.
Fig. 5 is the relevant technologies.
Fig. 6 a- Fig. 6 d is the cross-sectional view of an OLED luminescent panel；Wherein Fig. 6 a is the basic face OLED Plate；Fig. 6 b has a preceding epiphragma；Fig. 6 c has additional encapsulated layer on substrate；Epiphragma after Fig. 6 d has one.
Fig. 7 a is the cross-sectional view of the transparent OLED illumination assembling with rectangular reflection sources.
Fig. 7 b is the two-dimentional optical path simulation drawing of transparent OLED illumination assembling.
Fig. 7 c- Fig. 7 h is the three-dimensional light beam distribution map and two dimension of incident flux of the different illumination groups on viewing surface respectively Light distribution curve.
Fig. 8 a is the cross-sectional view of the transparent OLED illumination assembling with round reflection sources；Fig. 8 b- Fig. 8 g is different The three-dimensional light beam distribution map of incident flux of the illumination group on viewing surface and two-dimentional light distribution curve.
Fig. 9 a is the cross-sectional view of the transparent OLED illumination assembling with vaulted reflection sources；Fig. 9 b- Fig. 9 c is vaulted The schematic diagram of reflection sources；Fig. 9 d- Fig. 9 i is the three-dimensional beam distribution of incident flux of the different illumination groups on viewing surface respectively Figure and two-dimentional light distribution curve.
Figure 10 a is the cross-sectional view of the transparent OLED illumination assembling with concave reflection source；Figure 10 b is concave reflection The schematic diagram in source；Figure 10 c- Figure 10 h is the three-dimensional light beam distribution map of incident flux of the different illumination groups on viewing surface respectively With two-dimentional light distribution curve.
Figure 11 a is the cross-sectional view of the transparent OLED illumination assembling with convex refractive source；Figure 11 b is convex refractive The schematic diagram in source；Figure 11 c- Figure 11 h is the three-dimensional light beam distribution map of incident flux of the different illumination groups on viewing surface respectively With two-dimentional light distribution curve.
Figure 12 a- Figure 12 f is the three of incident flux of the different illumination groups on the viewing surface of large-area transparent device respectively Tie up beam distribution figure and two-dimentional light distribution curve.
Figure 13 a- Figure 13 c is the photo using the transparent OLED illumination group of rectangular reflection sources under various configurations.
Figure 14 a- Figure 14 c is the photo using the transparent OLED illumination group of round reflection sources under various configurations.
The cross-sectional view of reflection sources 401 and 601 when Figure 15 a is perpendicular to z-axis；Figure 15 b is parallel to z-axis along figure The schematic diagram of the ray trajectory of 15a middle line AA '.
Figure 16 is the schematic diagram of the ray trajectory of illumination assembling 6 in mode 1.
Figure 17 a is transparent yellow light OLED device structural schematic diagram, and Figure 17 b is the device architecture signal of transparent Nan dian Yao Figure.
Figure 18 is the molecular formula of the used material of device.
Figure 19 is the spectrogram that transparent yellow light OLED 1 is measured from substrate-side and package-side.
Figure 20 is the light transmittance figure for the MgAg that 12nm is doped with 10%Ag.
Figure 21 is the spectrogram that transparent Nan dian Yao 2 is measured from substrate-side and package-side.
Figure 22 is the exemplary diagram of physical connection between reflection sources and transparent OLED luminescent panel, wherein being physically connected as fixed knot Structure.
Figure 23 a and Figure 23 b are the exemplary diagrams of physical connection between reflection sources and transparent OLED luminescent panel, wherein physical connection For adjustable structure.
Figure 24 a and Figure 24 b are the exemplary diagrams of physical connection between reflection sources and transparent OLED luminescent panel, wherein physical connection For fixed structure, reflection sources or transparent OLED luminescent panel are flexibility.
Specific embodiment
As used herein, " top " means farthest from substrate, and " bottom " mean it is nearest from substrate.It is described by first layer It is " setting " in the case where second layer "upper", first layer is arranged to away from substrate farther out.Unless regulation first layer "AND" second Layer " contact " otherwise may exist other layers between first and second layer.For example, even if existing between cathode and anode each Cathode can be still described as " setting exists " anode "upper" by kind organic layer.As used herein, term " OLED device " includes anode Layer, cathode layer, one or more layers organic layer being set between anode layer and cathode layer.One " OLED device " can be bottom hair Light is to shine from substrate side, or top is luminous i.e. luminous from cathode layer side or transparent devices are i.e. simultaneously from substrate and yin Pole layer side shines.One top shines or transparent " OLED device " can also include cap layer on cathode layer.Such as this paper institute Include substrate with, term " OLED luminescent panel ", anode layer, cathode layer, one layer be set between anode layer and cathode layer or Multilayer organic layer, cap layer (optional), encapsulated layer, and extend at least one positive contact outside encapsulated layer and at least one A cathode contacts are used for external electric drive.As used herein, term " encapsulated layer " can be film of the thickness less than 100 microns Encapsulation comprising one or more layers film is coated directly on device, or is also possible to adhere to the glass cover on substrate Piece (cover glass).As used herein, term " flexible print circuit " (FPC) refer to being coated on any flexible base board with Under any or their combination, including but not limited to: conductor wire, resistance, capacitor, inductance, transistor, MEMS (MEMS), etc..The flexible base board of flexible print circuit can be plastics, and thin glass is coated with the thin metal foil of insulating layer, knits Object, leather, paper, etc..One flexible printed circuit board general thickness is less than 1 millimeter, and preferred thickness is less than 0.7 milli Rice.As used herein, term " light-extraction layer " can refer to optical diffusion film or other micro-structures with light extraction effect, or Person is the thin film coating with light outcoupling effect.The substrate surface in OLED can be set in light-extraction layer, can also be at other Suitable position, for example, between substrate and anode or between organic layer and cathode, between cathode and encapsulated layer, encapsulation Layer surface, etc..As used herein, term " independent driving " refers to that the operating point of two or more luminescent panels is to be separately controlled 's.Although these luminescent panels may be connected on the same controller or power supply line, there can be circuit to divide and drive Dynamic route is simultaneously powered to every piece of panel without affecting one another.As used herein, term " light-emitting area " refers to area of plane Anodic, The part that organic layer and cathode are overlapped jointly does not include light extraction effect." light-emitting area " does not include edge-lit, does not represent three Hemispherical emitting space in dimension.As used herein, term " receiving luminous flux accounting " refers to limiting under area on viewing surface The ratio between total light flux that the luminous flux received and light source issue.As used herein, term " reflection sources " refer to one it is right Light has the object of reflex, has the surface of reflex to be known as " reflecting surface " light." reflection sources " can be hard, It can be flexible.The reflectivity of " reflecting surface " is 20% or more, preferably 50% or more, more preferably 80% or more. " reflecting surface " can be mirror surface, be also possible to diffusing reflection face, can be plane, be also possible to curved surface.As used herein, term " hot spot " refers to the shadow figure on viewing surface by being formed under light source and its reflection sources collective effect.As used herein, instead " physical connection " penetrated between source and transparent OLED light source can be fixed structure and be also possible to adjustable structure." physical connection " Range restriction is done into relative position between reflection sources and transparent OLED light source, so that the relative position of the two is relatively fixed. Even adjustable " physical connection " or reflection sources flexible or OLED light source flexible, when in use, reflection sources Change in location with OLED light source is unable to infinite expanding also by the containing of physical connection." physical connection " can be directly Reflection sources and transparent OLED light source are connected, can also realize and connect indirectly by other devices.
According to one embodiment of present invention, a kind of OLED illumination assembling is disclosed, comprising:
Transparent OLED light source；
Reflection sources a comprising reflecting surface；
Wherein the transparent OLED light source includes two light-emitting surfaces, and described two light-emitting surfaces are located at the transparent OLED light source Opposite sides；
The light-emitting surface of the transparent OLED light source is at least with the reflective surface portion of the reflection sources be overlapped；
Have physical connection between the reflection sources and the transparent OLED light source, and the reflecting surface of the reflection sources with it is described The nearest spacing of transparent OLED light source is greater than 1mm.
According to one embodiment of present invention, wherein the transparent OLED light source includes multiple transparent OLED luminescent panels.
According to one embodiment of present invention, OLED transparent light-emitting panel described in wherein at least two is vertical stacking.
According to one embodiment of present invention, at least two in the plurality of transparent OLED luminescent panel are same It is aligned in plane.
According to one embodiment of present invention, wherein the reflecting surface includes mirror surface.
According to one embodiment of present invention, wherein the reflecting surface includes diffusing reflection face.
According to one embodiment of present invention, wherein the reflection sources be a bottom shine or top-illuminating OLED light-emitting surface Plate.
According to one embodiment of present invention, wherein the reflection sources include photocatalyst material.
According to one embodiment of present invention, wherein the reflection sources include embedded photoluminescent material.
According to one embodiment of present invention, wherein the reflection sources are solar panels.
According to one embodiment of present invention, wherein the reflecting surface is curved surface.
According to one embodiment of present invention, wherein the area of the reflecting surface is any one greater than the transparent OLED light source The light-emitting area of side.
According to one embodiment of present invention, wherein the reflection sources and the relative position of the light source can dynamically adjust It is whole.
According to one embodiment of present invention, wherein the reflection sources can be stowed away, only just exist when needed.
According to one embodiment of present invention, wherein the reflecting surface and the nearest spacing of the transparent OLED light source are greater than 5mm, 10mm or 50mm.
According to one embodiment of present invention, wherein two light-emitting surfaces of the transparent OLED light source have different shine Coloration.
According to one embodiment of present invention, wherein two light-emitting surfaces of the transparent OLED light source are having the same luminous Coloration.
According to one embodiment of present invention, wherein two light-emitting surfaces of the transparent OLED light source have it is different bright Degree.
According to one embodiment of present invention, wherein the light-emitting surface with higher brightness is towards reflection sources.
According to one embodiment of present invention, wherein physical connection between the reflection sources and the transparent OLED light source It is adjustable.
According to one embodiment of present invention, wherein the reflecting surface only accounts for a part on reflection sources surface.
According to one embodiment of present invention, wherein the transparent OLED light source includes flexible and transparent OLED luminescent panel.
According to one embodiment of present invention, wherein the reflectivity of the reflecting surface is greater than 20%；Preferably, it is greater than 50%；It is furthermore preferred that being greater than 80%.
The sectional view of one basic OLED luminescent panel is shown in Fig. 6 a.OLED luminescent panel 300 contains substrate 301, an OLED device 310, a pair of contact electrode 303 is electrically connected with OLED device 310, one layer of encapsulated layer 302 but contact A pair of contact electrode 303 is connect by the exposure of electrode 303, a bonding structure 304 with external drive circuit.Substrate 301 can be Hard such as glass, be also possible to flexible such as plastics.OLED device 310 can be bottom luminescent device, top illuminating device, or Transparent devices, i.e. two sides can all shine.In the present invention, transparent devices can be used as light source, and bottom shines or top photophore Part can be used as reflection sources.Encapsulated layer 302 can be through the deadlocked cover glass on substrate of adhesive.Another scheme In, encapsulated layer 302 can be thin-film encapsulation layer, such as film glass, the alternate multilayer knot of the inorganic layer or organic-inorganic of single layer Structure.Contact electrode 303 may include at least one positive contact and a cathode contacts.Preceding epiphragma 305 can be added to base On this OLED luminescent panel 300, as shown in Figure 6 b.Preceding epiphragma 305 can be flexible print circuit (FPC) plate, print on it It has brushed the circuit being pre-designed and has been electrically connected to OLED device 310 by binding structure 304.In another scheme, bonding Structure 304 can be FPC frame, and preceding epiphragma 305 can be a plastic film and provide mechanical support.It is driven using FPC plate The specific descriptions of OLED luminescent panel can be found in Chinese patent application CN201810572632.3, with what is be cited in full text Mode is incorporated to, it is not in the range of the application covers.Preceding epiphragma 305 also may include light-extraction layer.When OLED device 310 is When top shines, preceding epiphragma 305 can be transparent in light emitting region.Preceding epiphragma 305 can be combination of the above.Additional Thin-film encapsulation layer 306 can be coated on one side or the two sides of substrate 301, as fig. 6 c.Preceding epiphragma can also coat additionally Thin-film encapsulation layer 306, but do not shown in figure herein.In fig. 6d, rear epiphragma 307 is covered on substrate 301.Rear cover Film 307 can be used for mechanical support.When OLED is bottom emission device, rear epiphragma 307 can be light-extraction layer.Epiphragma afterwards 307 can be combinations of the above.The OLED luminescent panel will be that the framework that following transparent OLED illuminations assemble is basic.
One transparent OLED luminescent panel can issue light from substrate and encapsulated layer two sides.It is seldom used as such as desk lamp ceiling light Etc lighting source, be because some light can be emitted (substrate side or encapsulated layer from the reverse side of target direction Side).Exactly because this, transparent OLED panel makees art application rather than general illumination mostly.In this work, it is proposed that Reflection sources are added to harvest the light at the target direction back side in transparent OLED panel rear, and are reflected back towards the region for wishing to reach.
Firstly, we simulate the light beam under various different modes using TracePro (a kind of commercialization light beam simulation softward) Distribution, simulates the lamps and lanterns using 6 kinds of reflection sources altogether, contains 3 kinds of different assembly models again in every kind of lamps and lanterns simulation.
Reflection sources 410: reflecting surface is square plane, having a size of 152mm x 152mm, surface area 231.04cm2, instead Penetrate coefficient 100%.
Reflection sources 510: reflecting surface is circular flat, diameter 190mm, surface area 283.38cm2, reflection coefficient 100%.
Reflection sources 610: reflecting surface is dome, depth 10mm, dome outer ring edge diameter 152mm, and dome radius of curvature is 290mm, mirror surface product are 182.12cm2, reflection coefficient 100%, Fig. 9 b, 9c show the reflection sources with x-axis respectively The sectional view of paper is passed through with z-axis.
Reflection sources 710: reflecting surface is concave surface, and as shown in fig. lob, concave surface depth 10mm, concave surface is parallel to y-axis opposite side chord length 152mm, being parallel to one side length of x-axis is also 152mm, and concave curvature radius is 290mm, and mirror surface product is 233.75cm2, Reflection coefficient 100%.
Reflection sources 810: reflecting surface is convex surface, and as shown in figure 11b, convex surface depth 10mm, convex surface is parallel to y-axis opposite side chord length 152mm, being parallel to one side length of x-axis is also 152mm, and convex radius 290mm, mirror surface product is 233.75cm2, Reflection coefficient 100%.
Lamps and lanterns 1:
Fig. 7 a shows 400 schematic cross-section of lamps and lanterns using reflection sources 410.The reflecting surface 401 of reflection sources 410 It is transparent OLED light source 420 below center, light-emitting area is 2mm x 2mm.Transparent 420 two sides of OLED light source are set to shine Surface 402 and 403 is the luminous field pattern of Lambertian, this is similar with the luminous situation of actual transparency OLED device.Set viewing surface 404 absorption coefficient is 100%, and area is 800mm x 800mm.Transparent OLED light source 420 shines close to 410 side of reflection sources The light that surface 402 emits can be reflected by reflecting surface 401.Transparent 420 material refraction coefficient of OLED light source is set as 1.5, absorbs system Number is 0.5.
Light, the light-emitting area 402 of the transmitting of light-emitting area 403 emit and are reflected by reflecting surface 401 but do not penetrated transparent The light and light-emitting area 402 of OLED light source 420 emit and are reflected by reflecting surface 401 and penetrate transparent OLED light source 420 Light, for common irradiation on viewing surface 404, two-dimentional light beam simulation drawing is as shown in Figure 7b.
Assuming that the luminous flux that light-emitting surface 402 issues is 1w, wavelength 555nm, emit 1000000 light, light-emitting surface 403 is sent out Luminous flux out is 0.5w, wavelength 555nm, emits 1000000 light.Transparent 420 two sides light-emitting area of OLED light source hair It is 1.5w that light out, which leads to total amount,.The simulation under all simulation models and different reflection sources form is all set using ibid luminous flux below It is fixed.
Mode 1: light-emitting area 402 and reflecting surface 401 apart from for 30mm, and light-emitting area 403 and viewing surface 404 apart from for When 70mm, the three-dimensional beam distribution of simulation is as shown in Figure 7 c.We drop to 0.1w/m with pharosage2It, can be with for boundary Corresponding region is drawn on viewing surface, the square hot spot as shown in black dotted lines in Fig. 7 c.This can also be from the correspondence of Fig. 7 d Two-dimentional light distribution curve in find out, which is about 680mm, and the gross area is about 4624cm2, in addition Luminous flux sharply declines.It shines the corresponding concentric circles hot spot of field pattern although can be seen that from Fig. 7 c with Lambertian, it is final Boundary is square, this has corresponded to the shape of reflection sources 410.Since the light-emitting area of reflection sources, OLED light source is all symmetrical , so two light distribution curves in x-axis direction, y-axis direction are overlapped.The luminous flux that entire viewing surface receives is 1.382w, it is 1.5w that the light of transparent 420 two sides light-emitting area of OLED light source, which leads to total amount, so it is logical with total emergent light to receive luminous flux Measuring accounting (hereinafter referred to as " receiving luminous flux accounting ") is 1.382/1.5=0.921.
Mode 2: fixed luminous flux, wavelength is constant with amount of light, when light-emitting area 402 and reflecting surface 401 apart from for 50mm, light-emitting area 403 and viewing surface 404 apart from when being also 50mm, the three-dimensional beam distribution of simulation as shown in figure 7e, two-dimentional light Line distribution curve is as depicted in fig. 7f.Drop to 0.1w/m with pharosage2Region for boundary is equally square, and side length subtracts Small is 500mm, area 2500cm2.For mode 1, the facula area for dropping to same pharosage is reduced.It is whole The luminous flux that a viewing surface receives also is reduced to 1.242w, and reception luminous flux accounting is 1.242/1.5=0.828.Mode 2 connects The light flux ratio mode 1 of receipts has lacked 0.14w, is primarily due to transparent OLED light source 420 with reflection sources 410 apart from increase, part The high angle scattered light issued from light-emitting surface 402 is not received by reflecting surface 401, leads to optical energy loss.Meanwhile it can be by reflecting surface 401 receive and are reflected into the emergent light angle of viewing surface and become smaller, and facula area is caused to reduce.
Mode 3: fixed luminous flux, wavelength is constant with amount of light, when light-emitting area 402 and reflecting surface 401 apart from for 95mm, when light-emitting area 403 and viewing surface 404 are apart from for 5mm, the three-dimensional beam distribution of simulation as shown in figure 7g, two-dimentional light Distribution curve drops to 0.1w/m as shown in Fig. 7 h, with pharosage2It further reduces for the region of boundary and is for side length 340mm, gross area 1156cm2Square.The luminous flux that entire viewing surface receives is 0.946w, receives luminous flux accounting 0.946/1.5=0.631.The received luminous flux of mode 3 is fewer, because of transparent OLED light source 420 and 410 distance of reflection sources Further increase, more could not be reflected back viewing surface by reflecting surface 401 from the wide-angle light beam that light-emitting surface 402 issues, energy into The loss of one step.And it is the light directly issued mainly from light-emitting surface 403 that viewing surface, which receives, at this time, the hot spot on viewing surface more connects It is bordering on the light-emitting area of transparent OLED light source itself, therefore area also sharply reduces.We can use the regulation of this feature and see Examine face glazed thread range of exposures.
Lamps and lanterns 2:
Fig. 8 a shows 500 schematic cross-section of lamps and lanterns using reflection sources 510, contains circular flat reflection sources 510, Transparent OLED light source 520, viewing surface 504 is having a size of 900mm x 900mm.Wherein, reflection sources 510 include reflecting surface 501, transparent OLED light source 520 includes light-emitting surface 502 and 503.
Mode 1: identical as the setting of mode 1 in lamps and lanterns 1, the three-dimensional beam distribution of simulation is as shown in Figure 8 b, two-dimentional light Distribution curve is as shown in Figure 8 c.Since reflection sources 510 are circular flats, 0.1w/m is dropped to pharosage2For boundary Region is also the circle echoed therewith, the part as shown in Fig. 8 b black dotted lines, while two light of x-axis, y-axis direction are distributed song Line is overlapped.The circular light spot diameter is about 830mm, and area is about 5410.60cm2, luminous flux sharply declines in addition.Entirely The luminous flux that viewing surface receives is 1.356w, so receiving luminous flux accounting 1.356/1.5=0.904.Due to reflecting surface 501 Surface area ratio reflecting surface 401 it is big, so circular light spot region also significantly increases.But at this time more due to the boundary of reflection sources 510 Far, the angle of emergence for the light being received in reflecting surface 501 is bigger than reflection sources 410, according to Lambertian field pattern principle, outgoing Energy is lower on the bigger unit area of angle.Therefore the lamps and lanterns 2 with more wide-angle reflection light receive on viewing surface Energy is lower.
Mode 2: it is identical as the setting of mode 2 in lamps and lanterns 1, the three-dimensional beam distribution of simulation as shown in figure 8d, two-dimentional light Distribution curve drops to 0.1w/m as figure 8 e shows, with pharosage2It is reduced into 600mm for the circular light spot diameter of boundary, Area is reduced into 2827.43cm2.The luminous flux that entire viewing surface receives is 1.241w, receives luminous flux accounting 1.241/1.5 =0.827.The analog result of mode 1 and 2 is consistent in the same lamps and lanterns 1 of this rule.The reception luminous flux accounting of lamps and lanterns 2 under this mode It is suitable with lamps and lanterns 1.
Mode 3: it is identical as the setting of mode 3 in lamps and lanterns 1, the three-dimensional beam distribution of simulation as illustrated in fig. 8f, two-dimentional light Distribution curve drops to 0.1w/m as illustrated in fig.8g, with pharosage2For boundary circular light spot diameter further reduce for 410mm, area 1320.25cm2.The luminous flux that entire viewing surface receives is 0.976w, receives luminous flux accounting 0.976/ 1.5=0.651.The trend that the luminous flux accounting of slave pattern 1 to 3 is successively decreased is identical using the lamps and lanterns 1 of reflection sources 1 with before.But In mode 3, the reception luminous flux accounting of lamps and lanterns 2 is slightly above lamps and lanterns 1.This is because when transparent OLED light source is far from reflection sources When, emit from light-emitting surface 502 and what can be reflected by reflecting surface 501 is all mainly low-angle emergent light, the shadow of wide-angle emergent light Sound sharply declines, and can reflect how much light at this time and determine mainly by reflection sources area.Note that although the observation set in lamps and lanterns 2 Face 900mm x 900mm is bigger than in lamps and lanterns 1 (800mm x 800mm), but the luminous flux except the viewing surface of lamps and lanterns 1 all exists 0.0001w/m2Hereinafter, and quantity it is few (this can find out from three-dimensional light beam distribution map 7g), therefore the difference pair of viewing area Receiving luminous flux accounting influences less.Therefore, it will be seen that the position of reflection sources shape and light source distance reflection sources It will influence distribution and quantity that light is received on viewing surface.
Lamps and lanterns 3:
Fig. 9 a shows 600 schematic cross-section of lamps and lanterns using dome-shaped reflection sources 610, contains dome-shaped reflection sources 610, transparent OLED light source 620, viewing surface 604 is having a size of 800mm x 800mm.Wherein, reflection sources 610 include reflecting surface 601, Transparent OLED light source 620 includes light-emitting surface 602 and 603.Fig. 9 b, 9c show that the reflection sources pass through paper with x-axis and z-axis respectively The sectional view in face.
Mode 1: when light-emitting area 602 and 601 central point of reflecting surface distance are 30mm, light-emitting area 603 and viewing surface 604 When distance is 70mm, as shown in figure 9d, two-dimentional light distribution curve is as shown in figure 9e for the three-dimensional beam distribution of simulation.It is dome-shaped anti- 610 central symmetry of source is penetrated, so two light distribution curves of x-axis direction, y-axis direction are overlapped.Dropped to pharosage 0.1w/m2Hot spot for boundary is circle, and as shown in Fig. 9 d black dotted lines, diameter is about 560mm, and area is about 2462.94cm2, Much smaller than the facula area of lamps and lanterns 1 and 2 in mode 1.And simultaneously, the luminous flux that entire viewing surface receives is 1.426w, institute To receive luminous flux accounting 1.426/1.5=0.951, and it is higher than the luminous flux accounting of lamps and lanterns 1 and 2 in mode 1 (respectively 0.921 and 0.904).It is all reflection low-angle emergent light, Neng Gougeng that this dome-shaped reflection sources 610 of explanation is most of in mode 1 Add and effectively assembles the light that transparent OLED light source issues.
Mode 2: fixed luminous flux, wavelength is constant with amount of light, when light-emitting area 602 and 601 central point of reflecting surface away from From for 50mm, light-emitting area 603 and viewing surface 604 apart from when being also 50mm, the three-dimensional beam distribution of simulation as shown in figure 9f, two It ties up light distribution curve as shown in figure 9g, 0.1w/m is dropped to pharosage2It is for the circular light spot diameter of boundary 500mm, area are about 1963.49cm2, as shown in Fig. 9 f black dotted lines.The luminous flux that entire viewing surface receives is 1.279w, Receive luminous flux accounting 1.279/1.5=0.853.Similar with mode 1, lamps and lanterns 3 can concentrate more light in smaller region.
Mode 3: fixed luminous flux, wavelength is constant with amount of light, light-emitting area 602 and 601 central point distance of reflecting surface For 95mm, when light-emitting area 603 and viewing surface 604 are apart from for 5mm, the three-dimensional beam distribution of simulation is as shown in Fig. 9 h, two-dimentional light Line distribution curve is as illustrated in fig. 9i.Drop to 0.1w/m with pharosage2Drop to for the circular light spot diameter of boundary 240mm, area are about 452.38cm2, as shown in Fig. 9 h black dotted lines.The luminous flux that entire viewing surface receives is 0.944w, Luminous flux accounting 0.944/1.5=0.629 is received, it will be low (respectively 0.631 and 0.651) than lamps and lanterns 1 and 2.This can lead to Cross Figure 15 explanation.Figure 15 a show reflecting surface 401 and 601 in the sectional view in vertical z-axis direction, wherein AA ' is in parallel z along the line The light schematic diagram of axial plane is as shown in 15b.When light source is located at 101 position of mode 1, sending can be connect by reflecting surface 601 The maximum angle light received be 106, reflected light 107 also can observed surface observe.And issue at this time can be by reflecting surface The 401 maximum angle light 104 received, reflected light 105 (shown in dotted line) but because the angle of emergence is too big can not observed surface It receives.Even if can be received, it is also possible to there is lower energy because Lambertian theorem is followed, and limited lower than hot spot Fixed 0.1W/m2.Therefore in mode 1, it is higher than using the reception luminous flux accounting of the lamps and lanterns 3 of reflecting surface 601 and uses reflecting surface 401 lamps and lanterns 1.When light source position moves on to the 103 of mode 3, the maximum angle light that can be received by reflecting surface 601 of sending 136 reflected light 137 (shown in dotted line) due to shooting angle it is excessive and can not observed surface receive.In contrast, at this time thoroughly What bright OLED light source issued can be 134 by the maximum angle light that reflecting surface 401 receives, and reflected light 135 remains to be observed Face receives.Therefore in mode 3, the reception luminous flux accounting using the lamps and lanterns 3 of reflecting surface 601 is lower than instead using reflecting surface 401 lamps and lanterns 1.This also illustrates again, and in addition to the shape size of reflection sources, the relative positional relationship of light source and reflection sources is also to adjust One of an important factor for controlling light beam.Note that the radius of curvature for changing reflection sources 610 also will affect beam distribution.
Lamps and lanterns 4:
Figure 10 a shows 700 schematic cross-section of lamps and lanterns model using reflection sources 710, contains concave reflective source 710, transparent OLED light source 720, viewing surface 704 is having a size of 800mm x 800mm.Wherein, reflection sources 710 include reflecting surface 701, Transparent OLED light source 720 includes light-emitting surface 702 and 703.
Mode 1: it is identical as the setting of lamps and lanterns 3 in mode 1, the three-dimensional beam distribution of simulation as shown in figure l0c, two-dimentional light Line distribution curve as shown in fig. 10d, due to concave reflection source 710 be not it is centrosymmetric, so two light of x-axis, y-axis direction Line distribution curve is not overlapped, and drops to 0.1w/m with pharosage2Hot spot for boundary is such as Figure 10 c black dotted lines part institute Show.The light spot shape received on viewing surface is corresponding with projection of shape of the reflection sources on viewing surface, and facula area is about 2939.79cm2.The luminous flux that entire viewing surface receives is 1.412w, so receiving luminous flux accounting 1.412/1.5= 0.941.In this mode, the facula area of lamps and lanterns 4 is greater than lamps and lanterns 3, this part difference is reflective in x-axis direction, This can also find out from two-dimentional light beam distribution map 10d.Since reflection sources 710 are greater than reflection sources 610, reflection on the boundary of x-axis Facula area it is also bigger.But meanwhile reflection sources 710 be collected into the direction of the x axis it is mostly be wide-angle emergent light but simultaneously Low-energy light, though therefore facula area it is big, it receives the lamps and lanterns that luminous flux accounting uses reflection sources 610 than model identical 3 is low.
Mode 2: it is identical as the setting of lamps and lanterns 3 in mode 2, the three-dimensional beam distribution of simulation as illustrated in figure 10e, two-dimentional light Line distribution curve is as shown in figure 10f, similar with mode 1, x-axis direction, y-axis direction two light distribution curves be not overlapped, with Pharosage drops to 0.1w/m2It is as shown in Figure 10 e black dotted lines part for the hot spot of boundary, facula area is about 1938.39cm2.The luminous flux that entire viewing surface receives is 1.274w, receives luminous flux accounting 1.274/1.5=0.849.
Mode 3: identical as setting of the lamps and lanterns 3 in mode 3, the three-dimensional beam distribution of simulation is as shown in Figure 10 g, two-dimentional light Line distribution curve is similar with mode 1,2 as shown in Figure 10 h, x-axis direction, y-axis direction two light distribution curves be not overlapped, Drop to 0.1w/m with pharosage2It is as shown in Figure 10 g black dotted lines part for the hot spot of boundary, facula area is about 618.39cm2.The luminous flux that entire viewing surface receives is 0.961w, receives luminous flux accounting 0.961/1.5=0.641.? When transparent OLED light source and reflection sources distance increase, low-angle emergent light is occupied an leading position, and the area of reflecting surface determines reception The number of light, area is bigger, and the light of reflection is more.The area of reflection sources 710 is 233.75cm2, the area of reflection sources 610 is 182.12cm2, therefore reception luminous flux accounting of the lamps and lanterns 4 under mode 3 is higher than lamps and lanterns 3.Note that changing the song of reflection sources 710 Rate radius also will affect beam distribution.
Lamps and lanterns 5:
Figure 11 a shows 800 schematic cross-section of lamps and lanterns in convex refractive source 810, contains convex reflection sources 810, thoroughly Bright OLED light source 820, viewing surface 804 is having a size of 1000mm x 1000mm.Wherein, reflection sources 810 include reflecting surface 801, transparent OLED light source 820 includes light-emitting surface 802 and 803.
Mode 1: when light-emitting area 802 and 801 central point of reflecting surface distance are 30mm, light-emitting area 803 and viewing surface 804 When distance is 70mm, as shown in fig. 11c, two-dimentional light distribution curve is as illustrated in fig. 11d, logical with light for the three-dimensional beam distribution of simulation Metric density drops to 0.1w/m2It is as shown in Figure 11 c black dotted lines part for the hot spot of boundary, facula area is about 6202.90cm2.The hot spot of lamps and lanterns 5 and other lamps and lanterns in mode 1 compared with, facula area significantly increases.However entire observation The luminous flux that face receives is 1.284w, and receiving luminous flux accounting is only 1.284/1.5=0.856, is 5 lamps in mode 1 It is minimum in tool.The light that reflection sources 810 issue light-emitting surface 802 after reflection the irradiation that more dissipates on viewing surface, We are it has also been discovered that light distribution is more uniform relative to other lamps and lanterns on viewing surface from Figure 11 d.Simultaneously because under the mode The small wide-angle light of a large amount of reflected energies, the luminous flux accounting for causing entire viewing surface to receive reduce.
Mode 2: when light-emitting area 802 and 801 central point of reflecting surface distance are 50mm, light-emitting area 803 and viewing surface 804 When distance is 50mm, as illustrated in fig. 11e, light distribution curve is as shown in figure 11f, close with luminous flux for the three-dimensional beam distribution of simulation Degree drops to 0.1w/m2It is as shown in Figure 11 e black dotted lines part for the hot spot of boundary, facula area is about 4835.88cm2.It is whole The luminous flux that a viewing surface receives is 1.159w, receives luminous flux accounting 1.159/1.5=0.773.
Mode 3: when light-emitting area 802 and 801 central point of reflecting surface distance are 95mm, light-emitting area 803 and viewing surface 804 When distance is 5mm, for the three-dimensional beam distribution of simulation as shown in Figure 11 g, two-dimentional light distribution curve is logical with light as shown in Figure 11 h Metric density drops to 0.1w/m2For boundary hot spot as shown in Figure 11 g black dotted lines part, facula area is about 2991.39cm2。 The luminous flux that entire viewing surface receives is 0.908w, so receiving luminous flux accounting 0.908/1.5=0.605.All three Under kind of mode, the reception luminous flux accounting of lamps and lanterns 5 be all it is the smallest, which reflects the lamps and lanterns to have very strong smooth dissipating effect. Equally, the radius of curvature for changing reflection sources 810 also will affect beam distribution.
Lamps and lanterns 6:
6 use of lamps and lanterns planar rondure reflection sources 510 identical with lamps and lanterns 2, it is only transparent OLED that other settings are just the same The light-emitting area size of light source is increased to 134mm x 134mm.
Mode 1: it is identical as the setting of mode 1 in lamps and lanterns 2, the three-dimensional beam distribution of simulation as figure 12 a shows, two-dimentional light Distribution curve is as shown in Figure 12b.Although the light-emitting area of transparent OLED light source increases, 0.1w/m is dropped to pharosage2 Region for boundary is still round, the part as shown in Figure 12 a black dotted lines, while two light of x-axis, y-axis direction are distributed song Line is overlapped.The circular light spot diameter is about 780mm, and area is about 4775.94cm2, lamps and lanterns are all before beam distribution obviously compares It is uniform, hence it is evident that embody the feature of an area source.The luminous flux that entire viewing surface receives is 1.064w, receives luminous flux Accounting 1.064/1.5=0.709.Compared with mode 1 in lamps and lanterns 2, receives luminous flux accounting and reduced simultaneously with circular light spot area ?.We can be by Figure 16 explanation come this phenomenon.Firstly, the small area in large-area transparent OLED light source 920 and lamps and lanterns 2 As the total light flux that transparent OLED light source 520 issues with the setting of light number is, it means that the unit light of light source 920 Energy is lower than light source 520.At this point, the low-angle light 905 that a boundary of transparent OLED light source 920 issues is anti-by reflecting surface 501 It penetrates, reflected light 906 is projected on viewing surface 904, but the energy of unit light is lower, therefore these light being received is total Luminous flux is also low.And the wide-angle light 907 that can be received by reflecting surface 501 that its another boundary issues, the emergent light after reflection 908 (shown in dotted lines) due to angle too greatly can not observed surface 904 receive, the light energy of this part is just lost, and is caused Receiving luminous flux accounting reduces.Next, we compare the light situation out with 520 same location of OLED light source transparent in lamps and lanterns 2. What is issued from 520 boundary of light source can be by (the heavy line institute of reflected light 506 for the light 505 (shown in heavy line) that reflecting surface 501 reflects Show), unit light ray energy is high, and it is also remote compared with light 906 to fall in the position on viewing surface 904.The light source 920 of same location Although it is identical away from viewing surface central point as 506 that the reflected light 902 of emergent light 901 falls in the position on viewing surface, energy is lower, It is likely lower than threshold value 0.1W/m2.Therefore work as and 0.1w/m is dropped to pharosage2When for boundary, the facula area of lamps and lanterns 6 can It can be smaller than lamps and lanterns 2.
Mode 2: it is identical as the setting of mode 2 in lamps and lanterns 2, the three-dimensional beam distribution of simulation as shown in fig. 12 c, two-dimentional light Distribution curve drops to 0.1w/m as shown in figure 12d, with pharosage2It is reduced into 680mm for the circular light spot diameter of boundary, Area is reduced into 3629.84cm2, as shown in Figure 12 c black dotted lines.The luminous flux that entire viewing surface receives is 1.006w, is connect Receive luminous flux accounting 1.006/1.5=0.671.Compared with mode 2 in lamps and lanterns 2, receive luminous flux accounting it is low, this in mode 1 Rule it is consistent, be all and the reason that unit light ray energy the is low because light of edge wide-angle is not reflected.With 0.1w/ m2802.41cm is increased than mode 2 in lamps and lanterns 2 for the circular light spot of boundary2.This aspect is because when transparent OLED light source 920 close to viewing surface when, the effect for being emitted directly toward the light beam of viewing surface becomes larger, since the light-emitting area of light source 920 is than in lamps and lanterns 2 Light source 520 it is big, therefore the facula area received on viewing surface also increases.On the other hand, the light reflected by reflecting surface 501 Also mostly in such a mode is low-angle light, and these light are more assembled, so that the luminous flux on unit area increases.Cause This, facula area of the lamps and lanterns 6 under mode 2 can be more than lamps and lanterns 2.Although this is but also reception luminous flux accounting is still low at this time In lamps and lanterns 2, but its gap is reducing.
Mode 3: identical as the setting of mode 3 in lamps and lanterns 2, the three-dimensional beam distribution of simulation is as shown in Figure 12 e, two-dimentional light Distribution curve drops to 0.1w/m as shown in Figure 12 f, with pharosage2Circular light spot diameter for boundary is 480mm, area For 1808.64cm2, as shown in black dotted lines in Figure 12 e.The luminous flux that entire viewing surface receives is 0.848w, and it is logical to receive light Measure accounting 0.848/1.5=0.565.Compared with mode 3 in lamps and lanterns 2, it is closer to receive luminous flux accounting, and facula area increases Greatly, this is consistent with above-mentioned rule.Meanwhile spot center region becomes rectangular (such as white dashed line institute in figure from circle before Show), this is corresponding with light source form.Especially from two-dimentional light scatter chart 12f it will be seen that in Center Length 100mm In the range of, light distribution curve be almost it is flat, this also embodies the feature of area source.In contrast, a point light source must It must combine camber reflection source that could generate uniform light flux distribution (results of such as above-mentioned lamps and lanterns 3), most typically a part Be exactly car light design.This explanation can pass through adjusting when OLED luminescent panel and reflection sources as an area source are arranged in pairs or groups Relative position between light-emitting area geomery, reflection sources geomery and light source and reflection sources is obtained to beam distribution Regulation.Particularly, uniform light point can be realized on viewing surface with composition transparent OLED luminescent panel and plane reflection source Cloth, this has for the point light source for needing camber reflection source saves space, reduces the advantages such as manufacturing cost.
The reception luminous flux situation that table 1 is simulated in different modes using the lamps and lanterns of different reflection sources
Table 1 summarizes the reception luminous flux simulated in different modes using the lamps and lanterns of different reflection sources and beam distribution feelings Condition.Therefrom it will be seen that in fixed light source, light spot shape and reflection sources shape have close ties, for flat For the reflection sources of face, spot size and reflection sources surface area are proportional.In different modes, reflection sources surface area is bigger, Facula area is bigger；For light source closer to reflection sources, facula area is bigger.The luminous flux received on viewing surface has with Setting pattern Direct relation, when light source is close to reflection sources, the bigger reflection sources reflection of area it is mostly be low energy wide-angle light, therefore light Although spot area is big, the luminous flux being an actually-received may be lower.Using the lamps and lanterns 3 of dome-shaped reflection sources 610 in light source There is good spotlight effect under the mode of reflection sources, compared with other lamps and lanterns, though the small reception light of facula area is logical It is high to measure accounting.Using convex refractive source 810 lamps and lanterns 5 antithesis, have lower reception luminous flux accounting under 3 kinds of modes, But facula area is obviously bigger than other lamps and lanterns, illustrates can there is good diffusion effect to light source using reflection sources 810.With same The reflection sources 710 and 810 of sample surface area, due to concaveconvex shape difference, the light beam received on viewing surface under Three models point Cloth and energy are entirely different.In some embodiments, the radius of curvature for changing reflection sources 610,710 and 810, also will affect light beam Distribution and Energy distribution.Using same plane luminous plate, fixed total light flux is constant, when increase transparent OLED panel light-emitting surface When product, receiving luminous flux accounting can become smaller.However, light source is accounted for closer to viewing surface, in facula area with luminous flux is received Smaller or even facula area is possible to than the upper difference with small area light source can be more than.Meanwhile light spot shape can corresponding light source Shape, and embody the uniformity that point light source is unable to reach.These all show through design light source, reflection sources and its opposite The regulation to light beam may be implemented in position grouping, and the characteristics of due to area source, can be real on viewing surface using plane reflection source Existing homogeneous light distribution.
The reflecting surface of reflection sources may include the surface such as mirror for being coated with reflectorized material or an even curface such as For example textured metope of silicon or a diffusing reflection surface.One reflecting surface can be plane and be also possible to curved surface.Reflecting surface Reflectivity can be greater than 20%, preferably greater than 50%, more preferably greater than 80%.Depending on target lighting effect, work as reflection When bread contains metal surface or flat surface, light area may more be concentrated and bright；And when reflection sources include rough surface or are overflow When reflecting surface, light area may be wider and dark.In some embodiments, a reflection sources may include mirror surface and diffusing reflection The combination in face.In further embodiments, a reflection sources can further include light-sensitive material and can change under light illumination Learn reaction.One reflection sources also may include the surface for being coated with embedded photoluminescent material, such as irradiative quantum dot under light illumination. Reflection sources can be hard, be also possible to flexible.The shape of reflection sources can be can be at any time according to desired illumination patterns It adjusts.Reflection sources are also possible to usually accept only to be opened when needed.It is all reflecting surface that reflection sources, which can be whole surface, It is also possible to that part of the surface is reflecting surface and rest part is transparent.
Transparent OLED light source can be monolithic luminescent panel and be also possible to arrange panel array in one plane.At this Gap can be reserved in the oled panel laterally arranged a bit, other transparent materials such as plastics, glass or liquid can also be filled.? In certain schemes, transparent OLED luminescent panel array can not also be in one plane but substantially all parallel with reflecting surface.Another In a kind of scheme, transparent OLED light source can be superposition before and after multiple transparent OLED panels.This has in CN201811148160.5 It is discussed in detail.When using multiple oled panels, extensive color gamut can be obtained.Reflection sources can face the transparent face OLED The substrate-side of plate or encapsulated layer side.Substrate-side and the light intensity ratio and color difference of encapsulated layer side can pass through adjusting means knot Structure, cathode material, cover layer material, encapsulation layer material etc. and change.The different luminous situation in two sides will lead to different final photographs Obvious results fruit, this is also that an isotropic point light source can not be accomplished.Transparent OLED light source can be being also possible to for hard It is flexible.
There are physical connections between reflection sources and transparent OLED light source, have done range restriction to mutual positional relationship.This Kind physical connection can be a fixed structure, such as the frame in Figure 22.Physical connection is also possible to adjustable structure, example Such as the stretchable flexible connection in Figure 23.Alternatively, physical connection is fixed structure, but reflection sources or transparent OLED light source are It is adjustable, such as shown in Figure 24.Although in both of the latter cases, the position between reflection sources and transparent OLED light source is becoming Change, but each other by the containing of physical connection, and is unable to infinite expanding or movement." physical connection " can be connected directly instead Source and transparent OLED luminescent panel are penetrated, indirectly can also realize connection by other devices.Such as in skylight of vehicle application, Reflection sources and transparent OLED light source can in respective canning, and then by roof structure be physically coupled to one it is whole In body.The nearest spacing of reflection sources and transparent OLED light source is greater than 1mm, more preferably greater than 5mm, 10mm or 50mm.Instead The farthest spacing of source and transparent OLED light source is penetrated less than 10 meters, is more preferably less than 1 meter.
One application using this kind of OLED illumination assembling can be the smart window of vehicle.Transparent OLED panel can replace Conventional window glass or skylight and be mounted.Reflection sources can be arranged to transparent OLED panel rear or even independent control.Reflection Source can be stowed away when transparent OLED panel is used as window, and only be shown when OLED is lit at lamp source rear.Another In a little applications, between reflection sources and transparent OLED light source can also with setting out articles, and when lighting OLED light source, article can by from The direct beam of oled panel sending and the light beam reflected from reflection sources illuminate.When this two-beam color difference, article Different brilliance can be showed.
We show transparent OLED luminescent devices, and the lamps and lanterns example to be formed is combined with various reflection sources below.We are first It is prepared for the transparent OLED luminescent device 1 of a substantially Yellow light-emitting low temperature, device architecture is as illustrated in fig 17 a.The device contains one A glass substrate, one layer preparatory patterned 800ITO is coated on substrate, and one layer includes 100The hole of compound HI Implanted layer (HIL), one layer includes 400The hole transmission layer (HTL) of compound HT, one layer includes 50Compound EB's Electronic barrier layer (EBL), one layer 400Luminescent layer (EML) contains a yellow light material of main part (compound YH) and is doped with 0.5% red emitting material (compound R D) and 20.5% green light luminescent material (compound GD), one layer includes 50 The hole blocking layer (HBL) of compound YHB, one layer 350Electron transfer layer (ETL) contains doping 60%8- oxyquinoline- The compound ET of lithium (LiQ), is finally 10LiQ vapor deposition is doped with 10% silver medal as electron injecting layer (EIL) and therewith Magnesiumization silver (MgAg) 120As transparent cathode.Secondly we are prepared for the transparent OLED photophore of a substantially blue light-emitting Part 2, device architecture is as illustrated in fig. 17b.The device is prepared on the glass substrate, one be patterned in advance 800ITO layer It is coated on substrate, subsequent hole injection layer (HIL) includes 100The hole of compound HI, one layer of compound HT pass Defeated layer (HTL) 1000, the electronic barrier layer (EBL) 100 of one layer of compound EB, one layer 250Luminescent layer (EML) contains indigo plant Light material of main part (compound BH) and 4% blue light emitting material (compound BD), the 100 of one layer of compound BHBHole barrier Layer (HBL), 150Electron transfer layer (ETL) contains the compound ET of doping 60%LiQ, is finally 10LiQ is as electronics Implanted layer (EIL) and magnesiumization silver (MgAg) 120 for being doped with 10% silver medalAs cathode layer.(compound is injected for hole HI), hole transport (compound HT), electronic blocking (compound EB), yellow light hole barrier (compound YHB), the resistance of blue light hole It keeps off (compound BHB), electron-transport (compound ET), blue light main body (compound BH), yellow light main body (compound YH), feux rouges hair The material structure example of light (compound R D), green luminescence (compound GD) and blue light emitting (compound BD) is opened up in Figure 18 Show.Glass substrate is 0.7mm thick.All organic layers and cathode layer are all deposited in vacuum environment, and with the glass cover of 0.7mm thickness Piece encapsulates in nitrogen environment, encapsulates glue UV illumination curing.Device luminescent device shines having a size of 2mm x 2mm.
Table 2 is corresponding transparent yellow light OLED device 1 in 15mA/cm2When device parameter performance.The performance of the device is joined Number is obtained respectively from substrate side (anode) and encapsulation side (cathode) in vertical angle using Konica Minolta 2000 It arrives.The CIE (X, Y) of 1 two sides of device, peak wavelength λ max and half-peak breadth (FWHM) are slightly different, this can also be from 15mA/cm2 Under find out in the spectrum that measures, as shown in figure 19.The CIE coordinate of device 1 is (0.59,0.41) in substrate-side, and in package-side For (0.56,0.44), spectrally green peak ratio is higher in package-side accordingly.The reason of color displacement mainly from The different optical properties of ITO (as anode) and MgAg (as cathode).The 120A MgAg that Figure 20 show 10% silver medal of doping exists Transmittance curve in visible-range, longer to wavelength its transmitance of light are lower.Therefore, it (is needed from encapsulated layer side Cross the side MgAg) feux rouges be compressed so that green light highlights.In addition, the brightness that transparent devices 1 are measured from substrate-side is super Cross 3500cd/m2, and the brightness measured from package-side is only 388cd/m2, 9 times or so of the two difference.This also because In this yellow light system, feux rouges occupies leading, and while passing through MgAg outgoing is suppressed, therefore can not penetrate, so that package-side The brightness measured sharply declines.
The transparent yellow light OLED device 1 of table 2 is from substrate-side and package-side in 15mA/cm2When luminescent properties compare
On the other hand, table 3 is corresponding transparent blue light OLED device 2 in 15mA/cm2When device parameter performance.It can be with Find out that the color of device 2 is almost the same in substrate-side and package-side since transmitance of the MgAg to short wavelength is very high, all protects It holds near (0.14,0.11).This can also find out (Figure 21) from the spectrogram being almost overlapped.At this point, substrate-side and encapsulation The brightness of side is respectively 613cd/m2And 199cd/m2, gap also falls to 3 times from the 9 of device 1 times.Ibid, blue light passes through It is lost seldom when MgAg, thus maintains higher brightness.
The transparent blue light OLED device 2 of table 3 is 15mA/cm in current density from substrate-side and package-side2When luminescent properties Compare
In other examples, yellow light can be obtained by adjusting red and green luminous material proportion, to also can change The colour brightness of substrate-side and package-side.In addition, the white light transparent devices formed with three kinds of luminescent materials of RGB, when transparent electricity Pole material is to the transmitance of different wavelengths of light not it is also possible to the component or regulation device junction that pass through three kinds of luminescent layers of fine tuning Structure makes transparent devices two sides go out light difference.Finally, by select different cathode layers and cover layer material, different proportion or Different-thickness, also available different transmitance, so that regulate and control transparent OLED device two sides goes out light.These are all one each It can not accomplish to the point light source of the same sex.
Use above-mentioned transparent OLED device 1 as light source, it is saturating with this that we realize reflection sources 410 in simulation above first The lamps and lanterns 1 of bright OLED light source composition.Wherein, reflection sources are having a size of 152mm × 152mm, have plated 1000The glass of aluminium.It is transparent The side that the substrate side surfaces of OLED device 1 are aluminized to reflection sources, package side surface is to viewing surface.Although transparent OLED device 1 is in base The light intensity of plate side is 9 times of package-side light intensity, and it is non-analog in 2 times, but our simulative display this difference only to reception The absolute value of luminous flux has an impact, and has little effect to facula area.When transparent OLED light source and reflection sources distance be 30mm, The practical illumination situation of (mode 1) is as depicted in fig. 13 a when apart from viewing surface 70mm.Photo absorbs above reflection sources, and transparent OLED device is located at below reflection sources, therefore does not occur in photo.Support rod in figure is for supporting mirror surface and transparent OLED device, influence of the size to viewing surface can be ignored.Note that since condition limits, it can not be according to simulating above In with pharosage 0.1W/m2As defining.Nevertheless, we can be seen that pharosage from the analog result of Fig. 7 d Sharply decline herein, this expression has an obvious boundary in the case where visually observing.Therefore in actual measurement, we make macroscopic As hot spot defining standard, observation obtains square hot spot, and it is about 3136cm that measurement, which obtains area,2.When transparent OLED device with Reflection sources distance is 50mm, and as illustrated in fig. 13b, hot spot is similarly practical illumination situation when apart from viewing surface 50mm (mode 2) Square, but area is reduced into 2025cm2.When transparent OLED device and reflection sources distance are 95mm, when apart from viewing surface 5mm As shown in figure 13 c, hot spot is equally square the practical illumination situation of (mode 3), but area continues to zoom out, about 900cm2.Simulation is shown in Table 4 with measured result comparison.
The simulation in different modes of 4 lamps and lanterns 1 of table and measured result
Mode 1 Mode 2 Mode 3
Simulate facula area (cm2) 4624 2500 1156
Survey facula area (cm2) 3136 2025 900
We are then combined into lamps and lanterns 2 using reflection sources 510 in simulation above and transparent OLED device 1, and reflection sources 510 are Mirror, diameter 190mm.Equally, the substrate-side object mirror of transparent OLED device 1, package side surface is to viewing surface.In figure Support rod be for supporting mirror surface and transparent OLED device, influence of the size to viewing surface can be ignored.Under mode 1 Practical illumination situation as shown in figures 14a.Visually visible to have obvious boundary hot spot for circle, area is about 5026.54cm2。 As shown in fig. 14b, hot spot is also round, but area is reduced into 2642.08cm for practical illumination situation under mode 22.Mode As shown in figure 14 c, hot spot is also round, but area is continued to zoom out to 1134.11cm for practical illumination situation under 32.Simulation 5 are shown in Table with measured result comparison.
The simulation in different modes of 5 lamps and lanterns 2 of table and measured result
Mode 1 Mode 2 Mode 3
Simulate facula area (cm2) 5410.60 2827.43 1320.25
Survey facula area (cm2) 5026.54 2642.08 1134.11
Table 4 and table 5 show that measured result is very close with analog result, and error is mainly from the boundary to hot spot boundary It is fixed.Since condition limits, actual measurement hot spot is defined by visually visible, can be than the 0.1W/m in simulation2It wants small and error can be big.Although In this way, transparent OLED light source lamps and lanterns 2 under the bigger trend of reflection sources facula area and same mode have than lamps and lanterns 1 There is the phenomenon that more large spot, it is consistent with simulation acquired results.This is also demonstrated by changing reflection sources shape and transparent OLED device The integrated mode of part and reflection sources can regulate and control the distribution of viewing surface light beam.
It should be appreciated that various embodiments described is only as an example, have no intent to limit the scope of the invention.Cause This, as the skilled person will be apparent, the claimed invention may include specific implementation as described herein The variation of example and preferred embodiment.Many in material described herein and structure can be replaced with other materials and structure, Without departing from spirit of the invention.It should be understood that being not intended to be restrictive about the various the theories why present invention works.

Claims (15)

1. a kind of OLED illumination assembling, comprising:
Transparent OLED light source；
Reflection sources a comprising reflecting surface；
Wherein the transparent OLED light source includes two light-emitting surfaces, and described two light-emitting surfaces are located at the phase of the transparent OLED light source To two sides；
The light-emitting surface of the transparent OLED light source is at least with the reflective surface portion of the reflection sources be overlapped；
Have physical connection between the reflection sources and the transparent OLED light source, and the reflecting surface of the reflection sources with it is described transparent The nearest spacing of OLED light source is greater than 1mm.
2. OLED illumination assembling as described in claim 1, wherein the transparent OLED light source includes that multiple transparent OLED shine Panel；
Preferably, OLED transparent light-emitting panel described in wherein at least two is vertical stacking；Alternatively, wherein the multiple transparent At least two in OLED luminescent panel are aligned in the same plane.
3. OLED illumination assembling as described in claim 1, wherein the reflecting surface includes mirror surface or diffusing reflection face.
4. OLED illumination assembling as described in claim 1, wherein the reflection sources are that a bottom shines or top-illuminating OLED is sent out Optic panel；Or the reflection sources are solar panels.
5. OLED illumination assembling as described in claim 1, wherein the reflection sources include photocatalyst material；Or wherein institute Stating reflection sources includes embedded photoluminescent material.
6. OLED illumination assembling as described in claim 1, wherein the reflecting surface is curved surface.
7. OLED illumination assembling as described in claim 1, wherein the area of the reflecting surface is greater than the transparent OLED light source Any side light-emitting area.
8. OLED illumination assembling as described in claim 1, wherein the reflection sources and the relative position of the light source can be moved State adjustment；Preferably, wherein the reflection sources can be stowed away, only just exist when needed.
9. OLED as described in claim 1 illumination assembling, wherein the reflecting surface and the transparent OLED light source it is nearest between Away from greater than 5mm, 10mm or 50mm.
10. OLED illumination assembling as described in claim 1, wherein two light-emitting surfaces of the transparent OLED light source have difference Luminescent chromaticity or identical luminescent chromaticity.
11. OLED illumination assembling as described in claim 1, wherein two light-emitting surfaces of the transparent OLED light source have difference Brightness；
Preferably, wherein the light-emitting surface with higher brightness is towards reflection sources.
12. OLED illumination assembling as described in claim 1, wherein the object between the reflection sources and the transparent OLED light source Reason connection is adjustable.
13. OLED illumination assembling as described in claim 1, wherein the reflecting surface only accounts for a part on reflection sources surface.
14. OLED illumination assembling as described in claim 1, wherein the transparent OLED light source shines comprising flexible and transparent OLED Panel.
15. OLED illumination assembling as described in claim 1, wherein the reflectivity of the reflecting surface is greater than 20%；Preferably, greatly In 50%；It is furthermore preferred that being greater than 80%.
CN201811606325.9A 2018-12-28 2018-12-28 Transparent OLED illumination assembling Pending CN109555983A (en)

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